Rostock 2019 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 57: Poster: Quantum Optics and Photonics III
Q 57.12: Poster
Thursday, March 14, 2019, 16:15–18:15, S Fobau Physik
Folded multi-loop atom interferometer for gravitational wave detection — •Christian Schubert, Dennis Schlippert, Sven Abend, Wolfgang Ertmer, and Ernst M. Rasel — Gottfried Wilhelm Leibniz Universität Hannover, Institut für Quantenoptik, Welfengarten 1, 30167 Hannover
We will present the concept of a terrestrial detector for gravitational waves based on atom interferometry. It utilizes symmetric beam splitters and relaunches of the atoms to generate folded multi-loop geometries for a broadband detection mode and a resonant detection mode for increased sensitivity. The folded multi-loop geometries enable a setup with a single axis laser link in each of the two horizontal arms of the detector, resembling the setup for laser interferometers for gravitational wave detection. In broadband mode, the detector covers frequencies between 0.1 Hz and 5 Hz with a peak strain sensitivity of 10−21 /√Hz. The concept also eliminates stringend requirements onto the atomic source common to other proposals based on atom interferometry.
The presented work is supported by the CRC 1227 DQmat within the project B07, the CRC 1128 geo-Q within the projects A02, the QUEST-LFS, the German Space Agency (DLR) with funds provided by the Federal Ministry of Economic Affairs and Energy (BMWi) due to an enactment of the German Bundestag under Grant No. DLR 50WP1700, and "Niedersächsisches Vorab" through the "Quantum and Nano-Metrology (QUANOMET)" Initiative within the project QT3.